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Commit b61e8007 authored by Florian Kaltenberger's avatar Florian Kaltenberger

adding LDPC encoder and decoder (from mwc18 branch)

parent 4b0a1c06
......@@ -1064,12 +1064,18 @@ set(PHY_TURBOSRC
${OPENAIR1_DIR}/PHY/CODING/3gpplte_turbo_decoder_sse_16bit.c
${OPENAIR1_DIR}/PHY/CODING/3gpplte_turbo_decoder_avx2_16bit.c
${OPENAIR1_DIR}/PHY/CODING/3gpplte_turbo_decoder.c
)
set(PHY_LDPCSRC
${OPENAIR1_DIR}/PHY/CODING/nrLDPC_decoder/nrLDPC_decoder.c
${OPENAIR1_DIR}/PHY/CODING/nrLDPC_encoder/ldpc_encoder.c
${OPENAIR1_DIR}/PHY/CODING/nrLDPC_encoder/ldpc_encoder2.c
${OPENAIR1_DIR}/PHY/CODING/nrLDPC_encoder/ldpc_generate_coefficient.c
)
set(PHY_TURBOIF
${OPENAIR1_DIR}/PHY/CODING/coding_load.c
)
add_library(coding MODULE ${PHY_TURBOSRC} )
add_library(coding MODULE ${PHY_TURBOSRC} ${PHY_LDPCSRC})
set(PHY_SRC
# depend on code generation from asn1c
${RRC_FULL_DIR}/asn1_constants.h
......
/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
#include <stdlib.h>
#include <math.h>
#include <stdio.h>
#include <string.h>
#include "SIMULATION/TOOLS/defs.h"
// 4-bit quantizer
char quantize4bit(double D,double x)
{
double qxd;
qxd = floor(x/D);
// printf("x=%f,qxd=%f\n",x,qxd);
if (qxd <= -8)
qxd = -8;
else if (qxd > 7)
qxd = 7;
return((char)qxd);
}
char quantize(double D,double x,unsigned char B)
{
double qxd;
char maxlev;
qxd = floor(x/D);
// printf("x=%f,qxd=%f\n",x,qxd);
maxlev = 1<<(B-1);
if (qxd <= -maxlev)
qxd = -maxlev;
else if (qxd >= maxlev)
qxd = maxlev-1;
return((char)qxd);
}
#define MAX_BLOCK_LENGTH 8448
int test_ldpc(short No_iteration,
int nom_rate,
int denom_rate,
double SNR,
unsigned char qbits,
short block_length,
unsigned int ntrials,
unsigned int *errors,
unsigned int *crc_misses)
{
//clock initiate
time_stats_t time,time_optim,tinput,tprep,tparity,toutput;
opp_enabled=1;
cpu_freq_GHz = get_cpu_freq_GHz();
//short test_input[block_length];
unsigned char *test_input[MAX_NUM_DLSCH_SEGMENTS]={NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL};;
//short *c; //padded codeword
unsigned char *estimated_output;
unsigned char *channel_input[MAX_NUM_DLSCH_SEGMENTS];
unsigned char *channel_input_optim[MAX_NUM_DLSCH_SEGMENTS];
double *channel_output;
double *modulated_input;
char *channel_output_fixed;
unsigned int i,j,trial=0;
short BG,Zc,Kb,nrows,ncols;
int no_punctured_columns,removed_bit;
int i1;
//Table of possible lifting sizes
short lift_size[51]= {2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,18,20,22,24,26,28,30,32,36,40,44,48,52,56,60,64,72,80,88,96,104,112,120,128,144,160,176,192,208,224,240,256,288,320,352,384};
int n_segments=8;
t_nrLDPC_dec_params decParams;
int n_iter;
*errors=0;
*crc_misses=0;
// generate input block
for(j=0;j<MAX_NUM_DLSCH_SEGMENTS;j++) {
test_input[j]=(unsigned char *)malloc16(sizeof(unsigned char) * block_length/8);
channel_input[j] = (unsigned char *)malloc16(sizeof(unsigned char) * 68*384);